At Patents you can conduct a Patent Search, File a Patent Application, find a Patent Attorney, or search available technology through our Patent Exchange. Patents are available using simple keyword or date criteria. If you are looking to hire a patent attorney, you've come to the right place. Protect your idea and hire a patent lawyer.
Image forming apparatus, method of controlling image forming apparatus,
and storage medium
An image forming apparatus includes: a light source; a polygon mirror; a brushless motor rotating a rotary polygon mirror; a light receiver configured to...
Electric motor control system
An electric motor control system includes an inverter, an element temperature observation data acquiring device, a rotational speed upper limit setting device,...
Control apparatus for rotating machine
A control apparatus, for a system including a rotating machine having a stator, around which a winding wire is wound, and a power conversion circuit, includes:...
Motor drive apparatus
To suppress a ripple contained in current flowing into a DC power supply during one-pulse control in a motor drive apparatus receiving electric power from the...
Field control device, method of field control, and synchronous rotating
A field control device for a synchronous rotating machine includes: a target operating condition input unit; a first subtraction unit; a final-control-quantity...
Arrangement for driving and drive method for a piezoelectric actuator
A method is disclosed for driving a piezoelectric actuator with a piezoelectric stack, which is operated as an actuating element of an injector. The...
Space vector pulse modulation based motor driver
A motor driver may include a controller, a space vector modulator, a converter and a detector. The space vector modulator may generate driving signals under...
DC power source, and DC power source control method
A DC power source to supply DC power to a plasma generator is configured as a simple and small-sized device that forms high voltage for generating a plasma...
On-chip power converter circuit and on-chip power supply using the power
An on-chip power converter and an on-chip switching power supply implemented using a film bulk acoustic resonator (FBAR) in place of an inductor. This MEMS...
Driving apparatus and electric power converter
A driving apparatus of the present disclosure includes a coil including a second terminal connected to a control terminal of a switching element, a charging...
Inverter system for energy-storing microgrid and controlling method
The present invention relates to an inverter system for energy-storing microgrid and a controlling method thereof, wherein the inverter system for...
Method for controlling inverter apparatus by detecting primary-side output
and inverter apparatus thereof
A control method for an inverter apparatus is provided. The inverter apparatus includes a direct current to direct current (DC/DC) converter and a direct...
Method and apparatus for minimising a circulating current or a common-mode
voltage of an inverter
The present disclosure discloses a method and an apparatus implementing the method for minimizing a circulating current of parallel-connected inverters. The...
Control circuit and control method for inverter circuit, and control
circuit and control method for power...
A control circuit controls the inverter circuit in one of the non-master-slave inverters connected in parallel in a power system. The control circuit includes:...
Method for the operational control of an inverter
A method for the operational control of an inverter designed for DC/AC voltage conversion that has at least one direct-voltage input and that can be connected...
Differential signal detector and full wave rectifier circuit thereof with
common mode signal rejection
A full wave rectifier (270) for use as part a differential signal detector (400) detects both high and low envelopes of differential signals (RX.sub.a,...
Energy harvesting device using SSHI techniques
An energy harvesting device harvests energy from an energy source, and includes an inductor and a control switch coupled in series, and a control module. The...
Power conversion apparatus
A power conversion apparatus comprises a first converter connected to a second converter. The first converter includes a first capacitor and the second...
Modular switch for an electrical converter, electrical converter, as well
as method for operating an electrical...
Described is a modular switch for an electrical converter. The modular switch is provided with a first series circuit including a first controllable power...
Power supply apparatus with input voltage detection and method of
operating the same
A power supply apparatus with input voltage detection includes a power input side and an input detection module. The power input side has a first input terminal...
Apparatus for multi-level switched-capacitor rectification and DC-DC
A voltage-step down rectifier topology suitable for integration on a die of an integrated circuit is described. In one embodiment, a switched capacitor...
Optoelectronic component device
An optoelectronic component device includes a first group of optoelectronic components including at least one first optoelectronic component, wherein the at...
Rectifier circuit with AC side short-circuiting function and synchronized
switch harvesting on inductor converter
Rectifier circuit including a pair of input terminals, a pair of output terminals, and a first circuit interconnecting the pair of input terminals. The first...
Power converter with a multi-level bridge topology and control method
The present subject matter is directed to apparatus and methods for producing a variable frequency output waveform from a power converter for use in a power...
Direct power conversion device and method for controlling direct power
A first capacitor is provided between a first power supply line and a second power supply line. A charge/discharge circuit includes a second capacitor provided...
Matrix converter having first and second commutation controllers
A matrix converter includes a power converter and a controller. The power converter includes bidirectional switches each having a controllable conducting...
Method and apparatus for modulating lower powers in resonant converters
Method and apparatus for power conversion. In one embodiment, the method comprises operating a resonant converter in a ring mode comprising (i) holding a...
Electric power conversion circuit system
There is provided an electric power conversion circuit system having a primary side electric power conversion circuit, a secondary side electric power...
Multi-output power supply
There is provided a multi-output power supply capable of maintaining power balancing between multiple output powers by fixing a switching duty until a voltage...
Current resonance DC-DC converter
A current resonance DC-DC converter includes a transformer, a switching circuit connected to a primary winding and having a pair of first and second primary...
Multi-stage power converters and methods for varying a regulated voltage
of one stage as a function of an...
A multi-stage power converter includes a pre-regulator circuit configured to provide a regulated output voltage, at least one DC/DC converter, and a control...
Single stage forward-flyback converter and power supply apparatus for
light emitting diode
There is provided a single stage forward-flyback converter including a power converting unit switching input power to perform a forward power conversion...
Inductive compensation based control of synchronous rectification switch
An electronic device includes a synchronous rectification circuit having an actively controlled switching element through which resonant current flows during...
Voltage generating apparatus for stably controlling voltage
A negative bias circuit outputs a DC voltage of a negative polarity. A positive bias circuit outputs a DC voltage of a positive polarity. The DC voltage of the...
System and method for controlling a duty cycle of a switched-mode power
In accordance with an embodiment, a method for controlling a switched-mode power supply (SMPS), includes receiving a measurement of a supply voltage input of...
Circuits and methods providing three-level signals at a synchronous buck
A circuit including: a three-level buck converter having: a plurality of input switches and an inductor configured to receive a voltage from the plurality of...
Automatic reference generator in switching boost converters
The present document relates to switching DC converters In particular, the present document relates to creating an auxiliary reference voltage for the switching...
Enhanced DC-DC converter, method for operating the DC-DC converter,
environmental energy-harvesting system...
A DC-DC converter independently supplies electrical loads. For each load, an output load signal is compared to a reference to generate a result indicating a...
Control circuit for maintaining output signal of switching regulator in a
sleep mode and method for regulating...
A control circuit for the switching regulator and a method for regulating electrical signal are disclosed. The control circuit for the switching regulator...
DC to DC converter
A DC to DC converter includes an inductor having a first terminal and a second terminal, the first terminal coupled to an input of the DC to DC converter and...
Apparatus and method for implementing a multiple function pin in a BCM
An apparatus and a method for implementing a multiple function pin in a boundary conduction mode power supply, uses a same pin to switch a power switch and to...
Power supply control apparatus
A power supply control apparatus has a voltage detection unit that detects output voltage of a battery or alternator; a condition acquisition unit that acquires...
Startup circuit and method for AC-DC converters
An AC-DC power converter includes a rectifying unit for generating a rectified voltage, an output stage for converting the rectified voltage into a DC voltage...
Apparatus and method for controlling inverter by measuring each phase
An apparatus and a method for controlling an inverter are disclosed. The apparatus determines a 3-phase current by receiving a 2-phase current from a leg-shunt...
Fault recovery for multi-phase power converters
A fault recovery method for multi-phase power converters enables delivery of reduced output power of as much as 66% of normal power in the event of a shorted...
Output circuit for magnetic / electronic transformer
Circuits (1) for receiving output signals from transformers (2) comprise filters (11) and switches (12). In the case of magnetic/electronic transformers, the...
RF switching converter with ripple correction
This disclosure relates generally to radio frequency (RF) switching converters and RF amplification devices that use RF switching converters. In one embodiment,...
Systems and methods to optimize active current sharing of parallel power
Provided is an approach for active control of cross currents flowing among multiple paralleled converters. Control of cross currents is achieved by using at...
Load responsive jitter
A controller for a power converter that may sense whether the power converter is in a light load condition. If the power converter is a light load condition,...
B+ mounted integrated active rectifier electronics
A method of cooling electronics of an alternator includes mounting the electronics onto an electrically conductive electronics chassis, and electrically...